I'm lucky to work in a store that sells several! Since I have access to several types, I have tried many. I'm 34 weeks along now, and have been playing around with them since about 10 weeks along.
I agree-the Bella Band feels nice for light support. I also have tried Preggers Maternity hose and tights. You don't feel too much support right when you put them on, but I at the end of a few hours, I can tell a positive difference.
The Boppy one is okay, but not all that comfortable. Medela also makes one that is more comfortable, but not as supportive (kind of like wearing an ace bandage). Belly Bandit has a new prenatal support called the Upsie. This is the most comfortable one I have found. Feels luxurious and nice to have on, plus provides good support. But the most supportive is from Gabrialla. It's not as soft as the Upsie, but more adjustable and supportive, so really does the job well.
And yes, I will say they make a difference.
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